SaniServ 798 User manual

Operation Manual
Model 798 Frozen Beverage Dispenser
with AccuFreeze Electronic Consistency Control
SaniServ®
An AFFINIS GROUP Company
“Reliability from the team that Serves the Best”

Distributor Name: ______________________________________________________
Address: _____________________________________________________________
Phone: _______________________________________________________________
Date of Installation: ____________________________________________________
Model Number: ________________________________________________________
Serial Number: _________________________________________________________
Installer/Service Technician: _____________________________________________
SERVICE: Always contact your SaniServ dealer or
distributor for service questions or service agency
referral. If your SaniServ dealer or distributor cannot
satisfy your service requirements, he is authorized to
contact the factory for resolution.
Note: It is the Owner’s responsibility to maintain the
Service Record located on the inside rear cover of this
manual. An accurate record of service performed can
greatly expedite troubleshooting of problems and
significantly reduce repair costs.
PARTS: Always order parts from your SaniServ dealer
or distributor. When ordering replacement parts,
specify the part numbers, give the description of the
part, the model number and the serial number of the
machine.
WARRANTY: Remove the Check Test Start (CTS)
form and fill it out in its entirety. Return the original
(white) copy to SaniServ. The Dealer/Distributor retains
the second (yellow) copy and the Owner/Operator
retains the third (pink) copy.
The Manufacturer's Limited Warranty is printed on the
reverse side of the Owner/Operator copy.
TO VALIDATE THE WARRANTY, THE CTS FORM
MUST BE COMPLETED AND RETURNED TO THE
FACTORY WITHIN 30 DAYS OF INSTALLATION.
Note: The Check Test Start function must be
performed by a qualified technician.
WARRANTY INFORMATION i
IMPORTANT
This machine was designed
to produce frozen slush
beverages only.
Do NOT attempt to operate
this machine with softserve
or shake type product mix.
Damage to the machine may
occur and warranty will be
void.
WARNING

ii
STATEMENT OF INTENDED USE
All SaniServ Machines covered in this manual are designed for one specific end use - to
freeze and dispense frozen beverages.
Model 798 Machine Specifications
Width
Inches (mm) 20.0
(508)
Height
Inches (mm) 34.0
(864)
Depth
Inches (mm) 35.0 (889)
Machine Weight
lb (kg) 234 (106)
Crated Weight
lb (kg) 274 (125)
Electrical 115 Volt
60 Hz-1
Circuit Amps - Minimum 15
Circuit Amps - Maximum 15
USE, WEIGHTS, DIMENSIONS, CIRCUIT AMPS
PICTOGRAM LEGEND
ELECTRICAL
SHOCK HAZARD TIP AND CRUSH HAZARD HAND PINCH OR ENTRAPMENT HAZARD SHARP MACHINE PARTS HAZARD
CLEANOUT
OPERATION FROZEN
PRODUCT USE MECHANICAL LIFT EQUIPMENT READ AND
UNDERSTAND WASH HANDS
BEFORE PROCEEDING
PROTECT EYES
SPLASH HAZARD

Table of Contents
Safety Warning..................................................................................................................................................................1
Introduction and Installation ..............................................................................................................................................1
Disassembly and Cleaning................................................................................................................................................2
Assembly and Lubrication .................................................................................................................................................6
Sanitizing ........................................................................................................................................................................19
Operation (Filling and Starting) .......................................................................................................................................10
Helpful Hints....................................................................................................................................................................11
Consistency Adjustment..................................................................................................................................................12
Routine Maintenance ......................................................................................................................................................13
Troubleshooting Guide....................................................................................................................................................14
Troubleshooting Glossary ...............................................................................................................................................15
Exploded View.................................................................................................................................................................16
Exploded View (Outback)................................................................................................................................................17
Wiring Diagrams..............................................................................................................................................................18
Service Record................................................................................................................................................................20
TABLE OF CONTENTS iii
Illustrations
Fig. 1 Leg Installation...............................................................................................................................................1
Fig. 2 Control Switch................................................................................................................................................2
Fig. 3 Do Not Insert Objects!....................................................................................................................................2
Fig. 4 Dispensing Product........................................................................................................................................2
Fig. 5 Dispensing Product........................................................................................................................................3
Fig. 6 Front Plate Assembly.....................................................................................................................................3
Fig. 7 O-Ring Removal.............................................................................................................................................3
Fig. 8 Dasher Assembly...........................................................................................................................................4
Fig. 9 Scraper Blade Removal.................................................................................................................................4
Fig. 10 Drip Tray Assembly........................................................................................................................................4
Fig. 11 Cleaning ALL Ports and Holes.......................................................................................................................5
Fig. 12 Dasher Lubrication.........................................................................................................................................6
Fig. 13 Dasher Assembly...........................................................................................................................................6
Fig. 14 Scraper Blade Installation..............................................................................................................................7
Fig. 15 Scraper Blade Wear Mark..............................................................................................................................7
Fig. 16 Dasher Installation .........................................................................................................................................7
Fig. 17 Dasher with Blade (Front View) .....................................................................................................................8
Fig. 18 Spigot Plunger Lubrication.............................................................................................................................8
Fig. 19 Front Plate Assembly.....................................................................................................................................8
Fig. 20 Drip Tray Assembly........................................................................................................................................8
Fig. 21 Do Not Insert Objects!....................................................................................................................................9
Fig. 22 Dispensing Product......................................................................................................................................10
Fig. 23 Mixout Light..................................................................................................................................................10
Fig. 24 Wiring Box....................................................................................................................................................12
Fig. 25 Electronic Consistency Control....................................................................................................................12
Fig. 26 Scraper Blade Wear Mark............................................................................................................................13
Fig. 27 Clean Sharp Condenser Fins.......................................................................................................................13

INTRODUCTION and INSTALLATION
ALWAYS USE A SUFFICIENT NUMBER OF PEOPLE
OR MECHANICAL LIFTING EQUIPMENT TO
PROTECT ALL PERSONNEL FROM PERSONAL
INJURY DURING THE REMAINING STEPS.
1. Raise the machine to install the four legs packed in
the mix pan or the four casters packed in a box on the
skid or on the front mounted drip tray. Be certain all
four are tight! Thread lock is suggested.
2. Carefully lower the machine to the floor and place it
where it will be installed.
3. Levelthe unit by turning the bottom part of each leg
clockwise or counterclockwise (Fig. 1). The machine
MUST be level to operate properly.
THESE UNITS MUST NOT BE OPERATED WITHOUT
LEGS INSTALLED OTHERWISE BOTTOM AIRFLOW
TO THE CONDENSER WILL BE RESTRICTED.
A MINIMUM 6” (152 MM) CLEARANCE MUST BE
MAINTAINED AT THE REAR AND SIDES OF THE
MACHINE FOR ADEQUATE VENTILATION.
ALWAYS CHECK ELECTRICAL SPECIFlCATIONS
ON THE DATA PLATE OF THE MACHINE. THE
DATA PLATE SPECIFICATIONS WILL ALWAYS
SUPERSEDE THE INFORMATION IN THIS MANUAL.
4. Electrical and refrigeration specifications are
located on the data plate on the rear panel of the
individual machines. Consult local authorities for
information regarding plumbing and electrical codes in
your area. Remove the left and right side panels for
power hook-up.
Note: All SaniServ machines should have their
own dedicated circuits to prevent low voltage
conditions caused by other operating equipment.
FAILURE TO PROVIDE FOR PROPER EARTH
GROUND ACCORDING TO LOCAL ELECTRICAL
CODES COULD RESULT IN SERIOUS ELECTRICAL
SHOCK OR DEATH. DO NOT USE EXTENSION
CORDS. INSTALL THE PROPER SIZE WIRE FOR
THE REQUIRED MACHINE AMPS. BE CERTAIN TO
OBSERVE LOCAL CODES IN SELECTING WIRE OR
CORD SIZE AND TYPE.
DO NOT TURN MACHINE
ON UNTIL THE
INSTALLER’S PRE-
OPERATIONAL
CHECK SECTION IS
COMPLETE.
Installation
Fig. 1
Minimum
Clearance
4”(102 mm) for
This manual provides a general system description of the SaniServ Frozen Beverage Dispensers. It has been prepared
to assist in the training of personnel on the proper installation, operation, and maintenance of the machines.
Read and fully understand the instructions in this manual before attempting
to install, operate, or perform routine maintenance on the machines.
The following sections of the manual must be performed in sequence:
1. Installation 4. Assembly & Lubrication
2. Installer's Preoperational Check 5. Sanitizing & Operation
3. Disassembly & Cleaning 6. Consistency Adjustment
Introduction
PAGE 1
WARNING
WARNING
IMPORTANT

Emptying Machine
If this is first time operation, disregard these steps.
Prior to the disassembly and cleaning of parts, the
machine must be emptied of product. Use the following
procedures (Steps 1 through 3).
DO NOT INSERT ANY OBJECTS OR TOOLS (FIG. 3)
INTO THE MIX INLET HOLE, RESTRICTOR TUBE
HOLE, OR FRONT PLATE DISPENSING HOLE WHILE
THE MACHINE IS RUNNING. DAMAGE TO THE
MACHINE OR PERSONAL INJURY MAY RESULT
1. Set the control switch (Fig. 2) to the “CLEANOUT”
position and dispense all product from the freezing
cylinder by pulling downward on the spigot handle
(Fig. 10) to empty the machine. Repeat for opposite side.
2. Set the control switch to the “OFF” (center) position.
Close the spigot handle (Fig. 4) before proceeding to
cleaning.
CONSULT YOUR LOCAL HEALTH AGENCY FOR LOCAL CLEANING AND SANITIZING REQUIREMENTS.
This unit does not come pre-sanitized from the factory. Before serving product, the dispenser must be disassembled,
cleaned, lubricated, and sanitized. Please be aware that these instructions are general guidelines. Cleaning and sanitizing
procedures must conform to local Health Authority requirements.
DISASSEMBLY and CLEANING
Fig. 4
Dispensing Product
Fig. 2
Control Switch
Disassembly and Cleaning
PAGE 2
AUTO
CLEANOUT
O
F
F
O
F
F
Fig. 3
Do Not Insert Objects or Tools
CAUTION

DISASSEMBLY and CLEANING
Disassembly and Cleaning Procedure
1. Fill the machine with cold water and set each control
switch to the “CLEANOUT” position. DO NOT use hot
water which could damage the machine. Let the
machine agitate 1 to 2 minutes, then drain the water by
pulling downward on the spigot handle (Fig. 5). Repeat
the above procedure as necessary to make certain all
product is removed from the machine. After the machine
is empty, set each control switch to the “OFF” position.
2. Prepare a suitable detergent and water solution at a
temperature of approximately 125°F. (52°C.) to 130°F.
(55°C.). For best cleaning results select a concentrated
anti-bacterial dishwashing detergent containing
biodegradable anionic and nonionic surfactants. Avoid
detergents containing phosphates. DO NOT use an
abrasive detergent on any part of the dispenser.
DO NOT USE HOT WATER.
DOING SO MAY DAMAGE THE MACHINE.
3. Make certain that the machine is “OFF”. Fill the mix
pan with the cleaning solution. Clean the mix pan
thoroughly with a brush as the solution drains into the
freezing cylinders. Clean the mix inlet tubes with the
brush provided.
4. Set the control switch to the “CLEANOUT” position
and agitate for approximately 1 to 2 minutes and then
drain the water by pulling down on the spigot handle
After the unit is empty, set each control switch to the
“OFF” position.
DO NOT USE ANY TOOLS OR SHARP OBJECTS TO
REMOVE ANY O-RINGS FROM THIS MACHINE.
SHARP OBJECTS WILL DAMAGE THE O-RINGS.
5. Remove the front plate by turning the black plastic
knobs in a counterclockwise direction (Fig. 6).
Disassemble the front plate in the following manner:
a. Remove the faspin and spigot handle.
b. Remove the front plate o-ring.
c. With the spigot handle removed, push the spigot
plunger out the top of the front plate and remove all
lubricant from the spigot plunger.
d. Remove the o-rings from the spigot plunger by
grasping the part with one hand and with a dry
cloth in the other hand, squeeze the o-ring upward.
When a loop is formed, grasp the o-ring with the
other hand and roll it out of its groove and off the
spigot plunger (Fig. 7).
Fig. 5
Dispensing Product Fig. 7 O-Ring Removal
Spigot Plunger
Faspin
Spigot
Handle
Front Plate
Front Plate O-ring
DO NOT LUBRICATE
Spigot Plunger
O-rings
Front Plate
Knobs
Fig. 6
Front Plate Assembly
CAUTION
CAUTION
PAGE 3

10. Remove the mix pan lid, drip tray and drip tray
insert (Fig. 10).
9. Remove the dasher assembly (Fig. 8) being careful
not to damage the scraper blades, then disassemble in
the following manner:
a. Remove and take apart the rear seal assembly.
b. Remove the stator rod from the dasher.
c. Remove the blades from the dasher by first rotating
blade upward (Fig. 9) and then unsnapping one
end from the support rod.
BLADES MUST BE REMOVED FOR CLEANING
Dasher Front
View Scraper Blade
Blade Support
Tab
Support
Rod
Blade Support
Tab
Support
Rod
Dasher Front
View
Scraper Blade
Fig. 10
Drip Tray Assembly
Fig. 9
Scraper Blade Removal
Fig. 8
Dasher Assembly
DISASSEMBLY and CLEANING PAGE 4
Scraper Blade
Rear Seal
Rear Bearing
Dasher
Stator Rod
Drip Tray Insert
Drip Tray
Drip Tray Support
Remains Attached
To Machine Front

12. Place all parts in a three partition sink filled with the
following solutions:
a. In one partition, detergent solution diluted to the
manufacturer’s suggested concentration for use.
b. In a second partition, clear rinse water.
c. In a third partition, sanitizing rinse solution which
will produce a 200 parts per million (PPM) Chlorine
residual or whatever Chlorine residual is required by
your Local Health Authority.
13. Use the brushes to clean all holes and ports in the
parts (Fig. 11).
DO NOT use an abrasive detergent
14. After thoroughly washing the parts in the detergent
solution, rinse them in the clear rinse water. Place the
parts in the sanitizing solution for at least five minutes or
whatever your Local Health Authority requires, and then
air dry the parts before for assembly and lubrication.
DO NOT ALLOW THE PARTS TO SOAK IN
SANITIZER FOR SEVERAL HOURS.
DO NOT WIPE THE PARTS DRY - AIR DRY ONLY.
15. The remainder of the machine including the mix pan
and freezing cylinder must be cleaned in place using a
mild detergent solution followed by a clear rinse. Clean
the exterior with a damp cloth.
DO NOT use an abrasive cleaner on the exterior of the
machine or on any of the panels (guards).
WHEN CLEANING THE MACHINE, DO NOT ALLOW
EXCESSIVE AMOUNTS OF WATER AROUND ANY
ELECTRICALLY OPERATED COMPONENTS OF THE
MACHINE. ELECTRICAL SHOCK OR DAMAGE TO
THE MACHINE MAY RESULT.
11. For best cleaning results select a concentrated
anti-bacterial dishwashing detergent containing
biodegradable anionic and nonionic surfactants.
NOTE: Avoid detergents containing phosphates.
WEAR SAFETY GLASSES
- DO NOT SPLASH
DETERGENT SOLUTION
IN EYES
Be certain to follow the
manufacturer’s mixing
instructions when adding
the dishwashing detergent
concentrate to water.
DISASSEMBLY and CLEANING
CAUTION
PAGE 5
Fig. 11
Clean ALL Holes and Ports
with Brushes
CAUTION
CAUTION
CAUTION
CAUTION
WARNING

1. Lubricate and assemble the dasher assembly in the
following manner:
a. Apply a generous amount of lubricant to the
shoulder of the dasher and the area of the shaft
where the white plastic portion of the assembled
rear seal contacts the shaft (Fig. 12). This is easily
performed by running a 1/4” (6 mm) bead of
lubricant around the shoulder of the dasher.
b. Lubricate the two areas of the stator rod (Fig. 12).
and slide the stator rod into the dasher
Make certain that the end of the stator rod is
inserted into the hole at the rear of the dasher.
c. Assemble and install the rear seal with the rubber
portion toward the rear of the freezing cylinder as
indicated in Fig. 13.
DO NOT LUBRICATE THE RUBBER PORTION OF
THE REAR SEAL. LUBRICATION ON THE REAR
SEAL WILL DAMAGE THE MACHINE.
Use a food grade lubricant* ONLY. Haynes Lubri-Film (SaniServ part number 1150) is recommended and is available
from the factory or your local authorized SaniServ dealer or distributor. Lubrication must be performed daily.
* The SaniServ recommended product is a colorless to white, odorless, tasteless food contact lubricant accepted by the
United States Food and Drug Administration (FDA) with a USDA rating of H1 and certified for food contact by NSF
International. Its useful temperature range is -15°F - 210°F (-26°C - 99°C) with a melt point of 93°C using ASTM D566
and a Saybolt viscosity of 55 at 210°F (99°C) when measured using ASTM D445
ASSEMBLY and LUBRICATION
Fig. 12
Stator Rod and Dasher Lubrication
PAGE 6
Assembly and Lubrication
Lubricate
Shaded
Areas
Scraper
Blade
Dasher
Stator Rod
Rear Bearing
Rear Seal
Fig. 13
Dasher Assembly
CAUTION

f. Install the scraper blades onto the dasher
assembly by holding the blades perpendicular to
the tabs (Fig. 14) and then snapping them over the
flat area of the support rod. Then rotate the blades
downward in a counterclockwise direction as
viewed from the front of the dasher . BE CERTAIN
THAT THE SCRAPER BLADES REST UPON
THE DASHER TABS.
Note: Reverse the blades at each cleaning to maintain
sharpness. In addition, the blades are equipped
with a wear mark (Fig. 15). When the blade is
worn to this wear mark, it must be replaced.
Blade Support
Tab
Support Rod
Dasher Front View
Scraper Blade
Dasher Front
View
Blade Support
Tab Support Rod
Scraper Blade
Rotate Down
Counter
Clockwise
Scraper Blade Wear Mark
End
View Side View
ASSEMBLY and LUBRICATION
PAGE 7
Fig. 14
Scraper Blade Installation
Fig. 15
Scraper Blade Wear Mark
g. Insert the dasher assembly into the freezing
cylinder as far as possible (Fig. 16) being careful
not to damage the scraper blades. Damage will
occur to the scraper blades and the dispenser will
not operate properly if the scraper blades are
installed facing in a clockwise direction.
Note: The stator rod has been deleted from the above
illustrations for clarity only. The stator rod must be
installed for proper machine operation.
h. While maintaining force against the dasher, rotate it
slowly until the tongue of the dasher engages the
groove in the drive system at the rear of the
cylinder. The outer most portion of the dasher
should be recessed approximately 1/4” (6 mm) to
3/8” (10 mm) inside the freezing cylinder. No part
of the dasher should extend outside the cylinder.
Scraper blades should be visible, extending
approximately 1/8” (3 mm) beyond the dasher
(Fig. 17).
Fig. 16
Dasher Installation
CORRECT
Blades
Resting On Tabs
Blades Pointing In A
Counterclockwise
Direction
Blades Should
Rest On Tabs
Blades Should Not Point
In A Clockwise Direction
INCORRECT

2. Lubricate and assemble the front plate assembly in
the following manner:
a. Install the two o-rings on the spigot plunger by
rolling them onto the plunger. Seat the o-rings in
the grooves. Be certain that they are not twisted.
Smooth the lubricant into the grooves and over
the sides of the plunger assembly (Fig. 18).
b. Slide the lubricated spigot plunger into the front
plate (Fig. 19) making certain that the spigot handle
slot is aligned to the front.
C. Insert the spigot handle and secure with the faspin.
d. Install the front plate o-ring.
DO NOT LUBRICATE THE FRONT PLATE O-RING
Fig. 18
Spigot Plunger Lubrication
PAGE 8
Fig. 17
Dasher with Blade (Front View)
ASSEMBLY and LUBRICATION
Approximately 1/8 inch
Exposed
Lubricate Shaded Area
e. Secure the front plate assembly with the two
plastic knobs. Simultaneously, turn the knobs in a
clockwise direction. Tighten the knobs evenly.
DO NOT tighten one knob all the way down and
then the other. Doing so may result in front plate
breakage. Only moderate force is required.
DO NOT over tighten. Close the spigot plunger.
3. Install the drip tray and drip tray insert (Fig. 20).
4. Proceed to the “Sanitizing” section of this manual.
Drip Tray Support
Remains Attached
To Machine Front
Drip Tray
Fig. 20
Drip Tray
Assembly
Drip Tray Insert
Spigot Plunger
Faspin
Spigot
Handle
Front Plate
Front Plate O-ring
DO NOT LUBRICATE
Spigot Plunger
O-rings
Front Plate
Knobs
Fig. 33
Front Plate
Assembly
Fig. 33
Front Plate Assembly

1. First, wash hands with a
suitable antibacterial hand soap.
For best results select a
concentrated anti-bacterial hand
soap containing biodegradable
anionic and nonionic surfactants.
2. Prepare approximately 2 to 3
gallons (8 to 12 liters) of sanitizing
solution equivalent to 200 ppm
chlorine residual or the residual
required by your local health
agency.
3. Carefully pour the solution
into the mix pan.
4. Using a sanitary brush, wipe
the solution onto the sides of
the mix pan, over the mixout
probe in the bottom of the mix
pan, and the underside of the
mix pan lid.
5. Set the control switch
to the “CLEANOUT” position
and let the unit agitate for
approximately three to five
minutes.
NOTE: DO NOT set the control switch to the “AUTO”
position. Doing so would freeze the sanitizing solution
and may result in damage to the machine.
DO NOT INSERT ANY TOOLS OR OBJECTS INTO
THE MIX INLET HOLE OR THE DISPENSING HOLE
IN THE FRONT PLATE. DAMAGE TO THE
MACHINE OR PERSONAL INJURY MAY RESULT
(FIG. 21)
6. Set the control switch to the “OFF” position and
drain the solution from the machine. Proceed directly
to the “Operation” section of this manual.
DO NOT RINSE OUT THE MACHINE.
DO NOT ALLOW SANITIZING SOLUTION TO
REMAIN IN THE MACHINE FOR SEVERAL HOURS.
DOING SO COULD DAMAGE THE MACHINE.
Prior to operation, the machine must be sanitized. The unit must have already been cleaned and lubricated.
Note: Sanitize immediately before use, not several hours before or the previous evening.
SANITIZING
Sanitizing
PAGE 9
Fig. 21
Do Not Insert Objects or Tools
WARNING
WARNING

Always start with a cleaned and sanitized dispenser as per previous instructions. Use only fresh mix when filling the
units. Following these instructions is critical to the maximum operating efficiency of the machine.
1. Set Control Switch to the “OFF” position..
2. Place a 16 oz. Cup under the spigot and open the
spigot handle. Pour approximately one quart of fresh
product mix into the mix
pan. (This will chase the
sanitizing solution from
the mix pan and freezing
cylinder.) Close the
spigot handle when the
sanitizer is purged from
the system.
3. Fill the mix pan with
chilled, properly mixed
product. Keep the mix
level in the mix pan at
least one inch
(25 mm) deep at all
times to avoid starving
the freezing cylinder. A
MIXOUT light (Fig. 23) located on the front of the
machine (one per freezing cylinder) is activated when
the mix solution drops to a potentially damaging level.
4 Set the control switch to the “AUTO” position to start
the machine.
5. Allow the compressor to cycle 3 or 4 times
dispensing a sample of the product after each cycle to
check for consistency. If the machine is not dispensing
the product at the desired consistency after four full
cycles, refer to the Consistency Control Section of this
manual. Initial pull-down time is 20-30 minutes, but it
may vary due to product and ambient conditions.
6. Replace the mix pan lid and always operate the
machine with the lid on the mix pan reservoir.
Note: SaniServ dispensers are designed to run frozen
beverage products having a Brix (sugar content) range
of 12.5 to 14 with a dispense temperature of 26°F to 28
°F (-3.3°C to -2.2°C).
Brix reading is taken by placing a small sample of
normally diluted concentrate on the viewer of a
refractometer. If a refractometer is not available,
contact the mix supplier.
Do not use a mix with a Brix reading of less than
12.5. Doing so may result in serious damage to the
machine.
If the Brix reading is above 14.0 or the alcohol content
is too high, the freezing point of the solution may be too
low to form slush.
DO NOT ATTEMPT TO MAKE FROZEN BEVERAGE
USING ARTIFICIALLY SWEETENED PRODUCT.
OPERATION
Fig. 22
Dispensing Product
Operation (Filling and Starting)
If the liquid level sensor detects a low level condition, it
will flash the “MIXOUT” light and activate the beeper
for three minutes or until the mix pan is filled to satisfy
the mix level probe. If the beeper is activated for more
than three minutes, the light will begin to glow
continuously, the beeping tone will slow down, and the
machine will no longer freeze product.
UNDER NO CIRCUMSTANCES SHOULD THE UNIT
BE OPERATED IN THE “AUTO” POSITION FOR
MORE THAN THREE MINUTES WITH EMPTY
FREEZING CYLINDERS . DOING SO WILL RESULT
IN DAMAGE TO THE MACHINE.
“CLEANOUT” Position: The dasher motor operates
continuously and the compressor will not come on.
The mix out level sensor will turn on the “MIXOUT”
light (Fig. 41b) but will not activate the beeper.
“AUTO” Position: The dasher motor and compressor
operate continuously. NOTE: The compressor on
this model runs continuously. Refrigerant is
provided to the evaporator as required by the electronic
consistency system.
CONTROL SWITCH POSITIONS
PAGE 10
Fig. 23
Mixout Light

Closed Hours/Shut-Down: If the machine is turned
off during closed hours, to resume operation:
1. Set the control switch to the "CLEANOUT" position.
2. Dispense two quarts (2 liters) of product into a
sanitized pitcher and pour it back into the mix pan.
Doing so serves as a mixing process to eliminate any
overnight separation.
NOTE: NEVER POUR FROZEN PRODUCT INTO
THE MIX PAN. LET IT MELT FIRST.
3. Set the control switch to the "AUTO" position and
resume operation.
Mixing: Make certain that the product is prepared per
label instructions. The machine is designed to operate
with frozen product base having a brix range of 12.5 to
14.0. To ensure consistency and quality, use a mixing
container large enough to hold 5 gallons (20 liters) with
1 gallon (4 liter) markings to allow accurate mixing of
the frozen beverage base. Stir well before adding to
the mix solution to the mix pan. Refrigerate the base
after diluting. Keep the empty gallon bottles with their
lids or caps installed and refill them with diluted base
for easy access during busy operating periods.
Filling: Always fill the machine at the start of each
day. Fresh prechilled mix will produce the best results.
Mix Pan Lid: Be sure to leave the lid in place on top of
the machine to prevent any foreign materials from
contaminating the mix.
Drip Tray: This should be removed daily and cleaned
to remove residue.
Front Plate: This component is the plastic device from
which the product is dispensed. It is designed and
made for strength and durability. However, through
improper use, it can be damaged. Use the following
information for proper care.
1. Do not lubricate the large o-ring on the rear of the
front plate. If lubricated, it will not seal properly and
product will leak from the front plate (Fig. 33).
2. Do not over tighten the knobs.
3. Always tighten the front plate knobs evenly. Do
not attempt to turn one knob all the way down and then
the other(s). Doing so will bind the front plate and
result in breakage.
4. Improper installation of the stator rod can cause
breakage. The stator rod must be properly seated in
the dasher before installing the front plate. If the stator
rod is improperly installed, subsequent tightening of the
knobs will break the front plate.
5. Do not attempt to wash the front plate or any other
machine components in a dishwasher.
Mix Out Light: When the mix out light comes on, fill
the mix pan. The mix pan must be filled immediately to
prevent air from entering the freezing cylinder. If air
enters the freezing cylinder, it will create the condition
known as “starving the machine”, causing freeze-up
and vibration. If this condition occurs, set the control
switch to the "OFF" position and add mix to the
mix pan. Allow the freezing cylinder to refill and return
the control switch to the "AUTO" position.
HELPFUL HINTS
Helpful Hints
PAGE 11

Consistency Adjustment
Consistency adjustment is done by adjusting the
potentiometer on the electronic control board (ECB).
The ECB is located behind the front wiring box cover
above the front dispensing plates.
1. Remove two Phillips screws on the underneath
side of the wiring box cover. The ECB is located
inside the wiring box as show in Fig. 24.
2. Locate the black potentiometer labeled
HARDNESS as shown in Fig. 25. By turning the
potentiometer to the right (clockwise) it will
increase the thickness and lower the product
temperature. Turning the potentiometer to the left
(counter clockwise) will decrease the thickness and
raise the temperature.
3. Reinstall the wiring box cover and reconnect the
power.
4. Run the unit with product and allow the
refrigeration system to cycle TWO times.
5. Draw product from the machine and check for
desired consistency.
6. Repeat procedure if required.
NOTE: ONLY TURN THE POTENTIOMETER IN
SMALL INCREAMENTS.
If you cannot adjust the product consistency to your
desired thickness, contact your local Certified
SaniServ Service Provider.
PAGE 12
CONSISTENCY ADJUSTMENT
Fig. 25
Hardness Control
CAUTION
BEFORE PROCEEDING
DISCONNECT THE POWER
Electronic Consistency Control
Fig. 24
Wiring Box
This machine is designed with an electronic control board to manufacture Frozen Slush Beverage
Only! Do not attempt to operate the machine with soft serve and or shake type products. Operat-
ing unit with soft serve or shake products will damage the machine and factory warranty will be voided.
DO NOT ADJUST THE MACHINE!
Improper consistency is due to improperly mixed product
This equipment has been tested at the factory with slush product and has been shipped with FACTORY
PRE-SETS. Non-Alcoholic beverage temperature will range from 25-28 degrees. Alcoholic beverage
temperature will range from 17-22 degrees. If you feel a consistency adjustment is needed, check the
temperature of the dispensed product before making an adjustment. If your product is within these tem-
perature ranges and the consistency is incorrect, you may have improperly mixed product.
ADJUSTING THE MACHINE TO COMPENSATE FOR IMPROPERLY MIXED PRODUCT MAY CAUSE
PRE-MATURE COMPONENT FAILURE AND MAY VOID WARRANTY.
CAUTION !

Routine Maintenance (Trained Service Technician)
Routine Maintenance (Owner-Operator)
ROUTINE MAINTENANCE
PAGE 13
Scraper Blade Wear Mark
End
View Side View
Fig. 26
Scraper Blade Wear Mark
CONDENSER FINS ARE VERY SHARP
USE EXTREME CAUTION WHEN CLEANING
Quarterly: Thoroughly clean the condenser fins on all
air-cooled machines. Remove all lint and dust with a
vacuum cleaner or compressed air (Fig. 27) to clean
fins. A dirty condenser greatly reduces refrigeration
capacity and efficiency. When using compressed air,
place a damp cloth on the opposite side of the
condenser to catch the flying dirt or lint.
Annually: Check the belts for signs of wear or cracking.
Remove panels and clean all parts inside of the machine
including the base, side panels, fan blades, condensers,
etc.
DISCONNECT THE MACHINE FROM ITS POWER
SOURCE(S) BEFORE PERFORMING ANY ROUTINE
MAINTENANCE. PERSONAL INJURY OR DAMAGE
TO THE MACHINE COULD RESULT IF THIS
PRACTICE IS NOT OBSERVED.
Daily: Inspect the machine for signs of product leaks
past seals and gaskets. If proper assembly does not
stop leaks around gaskets or seals, check for improper
lubrication and worn or damaged parts. Replace parts
as needed.
Periodically: Inspect the scraper blades (Fig. 26) to
see that they are straight and sharp. If worn, damaged
or warped, the blades will not scrape the cylinder walls
correctly and the freezing capacity will be reduced.
Clean the drip chute assembly (Fig. 48) with warm water
and detergent solution.
Fig. 27
Clean Sharp Condenser Fins
WARNING
WARNING

Please make these simple checks prior to contacting you service provider. Because adjustments to the machine are not covered
under the terms of warranty, these tips can save you time and money. If you feel you are not comfortable performing trouble-shooting
su
gg
estions
,
p
lease contact
y
our local certified service
p
rovider.
Machine will
not start  Make sure electrical cord is correctly seated in the electrical receptacle.
 Check circuit breaker in electrical panel.
Product is
Soft
 Do not make a consistency adjustment at this point. Always check product temperature first. Should be
between 25-28 degrees non-alcoholic frozen beverage and 18-22 degrees alcoholic frozen beverage. See
Product Breakdown in glossary section. Replace with fresh product. If using a frozen beverage product
and temperature is lower than listed, product has too much sugar, alcohol or combination. Correct
ingredients and start with freshly mixed product.
 Check for properly mixed product. Replace as necessary
 If using Re-run product, remove product and add fresh mix.
 Check for dull scraper blades. Blades should be sharp. Replace every 6 months.
 Check Condenser for dirt or obstructions. See Quarterly Maintenance
 Confirm that the condenser fan is running.
 Confirm 6” of airflow on all both sides and back of machine.
 High ambient temperature. Recommended machine ambient temperature not to exceed 82 degrees.
Product is too
Thick
 Check for properly mixed product.
 Confirm freezing cylinder is not starved of product. See glossary (Starved Cylinder)
 Check product temperature. Should be between 25-28 degrees non-alcoholic frozen beverage and 18-22
degrees alcoholic frozen beverage.
 Check for missing scraper blade or stator rod. Check dasher assemblies.
Front Plate
Leaking
 Confirm front plate o-ring is not ripped or torn. Replace if necessary. Replace seals and o-rings every six
months.
 Do not lubricate front plate o-ring.
 Confirm spigot plunger o-rings are not ripped or torn. Replace if necessary. Replace every six months.
 Confirm spigot plunger o-rings are lubricated daily.
 Tighten front plate knobs evenly.
 Confirm stator rod is not worn or grooved.
Product
leaking from
the drip chute
and or drip
tube.
 Rear Seal is worn. Replace. Note: Replace seals, o-rings and gaskets every six months.
 Do Not Lubricate the rubber portion of the rear seal
 The shaft of the dasher where the rear seal is installed must be lubricated daily.
 Confirm stator rod is not worn or grooved.
 Front plate knobs loose.
Squeaking ,
chirping
noises and or
vibration
heard.
 Use properly mixed product. Replace as necessary.
 Confirm freezing cylinder is not starved of product. See glossary (Starved Cylinder)
 Check lubrication
 Confirm all panel screws are installed and tightened
 Adjust width of drip tray bracket.
 Check for dull scraper blades. Blades should be sharp. Replace every 6 months.
Compressor
Runs
Continuously
 This is normal for the Model 798. Refrigerant is directed to each freezing cylinder independently based on
the electronic consistency control system.
Who to
contact for
service and
parts
 If you do not have a local service and parts provider, contact your SaniServ Dealer/Distributor. Visit
www.saniserv.com to locate a Distributor (Sales Section) or a Service Agent (Technical Support Section).
Standard Units
TROUBLESHOOTING GUIDE PAGE 14

Trouble Shooting Glossary
Ambient Temperature. The temperature of the air in the immediate vicinity of the operating machine. High ambi-
ent temperature can reduce the capacity with an air-cooled condenser.
Capacity. The total capacity of frozen product that a freezer can produce in a given period usually stated in gal-
lons per hour (G.P.H.).
Condenser. The part of the refrigeration mechanism that receives hot, high-pressure refrigeration gas from the
compressor and cools gaseous refrigerant until it returns to a liquid state.
Consistency. The viscosity or thickness of the product in the freezing cylinder.
Consistency Control. A control that senses the thickness or viscosity of the product in the freezing cylinder.
Dasher. The part of the freezer that scrapes frozen product off the inside of the freezing cylinder and blends the
product. In a gravity freezer, this assembly also moves the product forward to be dispensed.
Front Plate. Seals the front of the freezing cylinder and provides a means for dispensing the product. On gravity
fed freezers, the front plate indirectly holds the dasher in place via the stator rod. It also provides compression for
the rear seal.
Freezing Cylinder. The part of the refrigeration mechanism in which the refrigerant vaporizes and absorbs heat.
This is the part of the freezer where the liquid product is frozen.
Mix-pan. Is the top container that product is poured into. It is used as storage until product is needed for the
freezing cylinder
Mixing Product / Product Temperatures. If your using a product that has to be mixed with water or other ingredi-
ents, it is imperative the product is mixed consistently everyday. If not, the machine will not run consistent and
could possibly damage components. This is very important with frozen (slush) beverages. Always mix to the
product manufactures recommendations. The machine is designed to operate with a frozen product that falls
within these temperatures: non-alcoholic frozen beverage 25-28 degrees; alcoholic frozen beverage 18-22 de-
grees.
Rear Seal. This part is stationary during operation and must not move. When installed and lubed properly, seals
mix in cylinder. When installed and lubed improperly, it causes main shafted bearing failure.
Scraper Blades. The component that scrapes the frozen product from the freezing cylinder surface. Blades must
be sharp, as dull blades will leave product on the freezing cylinder, insulating the mix from the refrigerant.
Spinner Assembly. An externally installed or internally installed component used to blend a base product with
flavoring or other particulate.
Spigot Plunger. The mechanism on the front plate through which the product is dispensed.
Starved Cylinder. A starved cylinder is often mistaken for a freeze up or product too thick. A starved cylinder
(starving) is created when a larger percentage of frozen product is dispensed from the freezing cylinder than the
percentage of liquid product entering the freezing cylinder from the mix-pan. There are several causes of starving.
1. Overdrawing: Dispensing more product from the machine than it’s designed to do. This would occur if a ma-
chine were undersized for its application.
2. Mix out light not working therefore not alerting operator the need to add product.
3. Pouring frozen or semi frozen product into the mix-pan reservoir
4. Mix-pan too cold, allowing product to freeze in mix-pan and restricting product flow.
Stator Rod. Acts as a bearing surface. Transmits compression to the rear seal. Be sure to lubricate.
PAGE 15 TROUBLESHOOTING GLOSSARY